Solving by Clearing Decimals
To solve the linear equation , we can first simplify the expression and then clear the decimals.
Step 1 — Distribute: Multiply by each term inside the parentheses:
Step 2 — Combine like terms: Add the variable terms on the left side:
Step 3 — Multiply by the LCD: The decimals extend to the hundredths place, meaning they are equivalent to fractions with a denominator of (e.g., ). To clear the decimals, multiply both sides of the equation by :
Step 4 — Distribute the LCD:
Step 5 — Isolate the variable: Subtract from both sides to gather constant terms on the right:
Step 6 — Solve for : Divide both sides by :
To verify, substitute back into the original equation. The result is , confirming that the solution is correct.
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Ch.2 Solving Linear Equations - Intermediate Algebra @ OpenStax
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In professional finance and accounting, linear equations are often used to model budget projections and tax rates. When these equations contain decimal coefficients, a common strategy is to clear the decimals by multiplying both sides by a specific power of ten. Match each coefficient scenario with the correct power of ten required to convert that coefficient into an integer.
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Learn After
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